Members of the Perovo Speleo caving team, Roman Zverev leads Natasha Sizikova along a traverse above a small pool of water inside Veryovkina [cave]. The only usable handholds on the route are small ledges in the limestone. Along this sump bypass passage, there were many small pools of water we needed to climb around. A week later, during the flood pulse that suddenly plummeted into these chambers, all of this gallery completely filled up with water and was totally submerged.